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Message-Id: <1190733473.2634.11.camel@imap.mvista.com> Date: Tue, 25 Sep 2007 08:17:53 -0700 From: Daniel Walker <dwalker@...sta.com> To: Ingo Molnar <mingo@...e.hu> Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Mike Galbraith <efault@....de>, Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>, Dhaval Giani <dhaval@...ux.vnet.ibm.com>, Dmitry Adamushko <dmitry.adamushko@...il.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [git] CFS-devel, latest code On Tue, 2007-09-25 at 08:45 +0200, Ingo Molnar wrote: > * Daniel Walker <dwalker@...sta.com> wrote: > > > On Mon, 2007-09-24 at 23:45 +0200, Ingo Molnar wrote: > > > Lots of scheduler updates in the past few days, done by many people. > > > Most importantly, the SMP latency problems reported and debugged by > > > Mike > > > Galbraith should be fixed for good now. > > > > Does this have anything to do with idle balancing ? I noticed some > > fairly large latencies in that code in 2.6.23-rc's .. > > any measurements? Yes, I made this a while ago, ftp://source.mvista.com/pub/dwalker/misc/long-cfs-load-balance-trace.txt This was with PREEMPT_RT on btw, so it's not the most recent kernel. I was able to reproduce it in all the -rc's I tried. Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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